Alfredo Saab is an applications engineering manager with Maxim Integrated Products Inc., Sunnyvale, Calif. He studied in Buenos Aires, Argentina. Previously, he worked as an American Scientific Associate at CERN, Geneva, Switzerland. Email address: Alfredo_Saab@maximhq.com
6 results found for Alfredo Saab, displaying items 1 - 6
October 2, 2008[Design View / Design Solution] Filter Trims Ultra-Precision Voltage Reference
VOLTAGE REFERENCES GENERATE WIDEBAND noise spectrums. For most semiconductor devices, this spectrum usually has a wideband “white noise” component with relatively constant power density versus frequency, and a “pink noise” or “1/f noise” component that grows with the inverse of frequency.1,2 The pink noise component rises up from the relatively flat white noise level at a point somewhere between a few hundred hertz and a kilohertz, and it increases 3 dB ...
November 5, 2007[Ideas For Design] Twisted Pair Accurately Reads Digital Temperature Sensor At 1000 m
The best way to make midrange, low- to medium-accuracy temperature measurements (considering size, cost, performance, and ease of use) is to use an IC temperature sensor. But most IC temperature sensors are designed for applications where the circuits to which they connect are nearby. Therefore, the inclusion of sensing, digitizing, and signal- processing functions in one IC greatly simplifies the design of such sensors and the data-acquisition interface. ...
September 28, 2006[Ideas For Design] Digitize Thermocouple Output Near Sensing Point
The thermocouple is a popular sensor for industrial temperature measurement because it's accurate, cost-effective, widely available, and suitable for a wide range of temperatures. It consists of two wires of different metal or metal alloys, welded together at the sensing end (usually called the hot junction). The thermocouple output is a voltage difference across the other ends of the wires (called the cold junction), which must be maintained at a known temperature. If required...
February 16, 2006[Ideas For Design] Telecom Supply Powers Temperature Sensor
IC temperature sensors generally are preferred in data-acquisition systems when the accuracy demands aren't extreme. Sensor, signal-processing, and data-conversion electronics are all integrated in the IC along with an easy to use digital-I/O interface, all at low cost. Such ICs require a supply voltage in the range of +3 V to +5 V, negative to common. Also, they usually draw very low supply current. But biasing the sensor is more difficult in a telecom system, where the only...
May 12, 2005[Ideas For Design] Single Supply Yields 0- To 5-V Ramp
Using standard circuits and no auxiliary voltage generators (such as charge pumps or inductive dc-dc converters), it's difficult to build a precision, rail-to-rail ramp generator that operates on a single supply and resets to a well-defined level. Figure 1 implements such a circuit using a bootstrapped series reference and an op amp with rail-to-rail I/O and very low bias current. The ramp is generated by a constant charging current into capacitor CRAMP. This is...
January 20, 2005[Ideas For Design] High-Power LED Driver Accepts Wide Input-Voltage Range
The advent of high-power LEDs that can replace incandescent bulbs has produced a need for circuits that efficiently match the LEDs to available power sources (batteries, car electrical systems, etc.). The circuits should also be able to regulate and control the LED light output, despite variations in output voltage from the power source. The circuit of --->Figure 1---> starts and operates a 1-A LED from a voltage that...
Alfredo Saab is an applications engineering manager with Maxim Integrated Products Inc., Sunnyvale, Calif. He studied in Buenos Aires, Argentina. Previously, he worked as an American Scientific Associate at CERN, Geneva, Switzerland.
